Details

Autor(en) / Beteiligte

• Ibrahim, Michael
• Bassil, Maria
• Khoury, Tony
• Demirci, Umit B
• El Tahchi, Mario
• Miele, Philippe

Titel

Formation mechanism of polyaniline self-assembled needles and urchin-like structures assisted by magnesium oxide

Ist Teil von

• Polymer international, 2015-04, Vol.64 (4), p.505-512

Ort / Verlag

Chichester, UK: John Wiley & Sons, Ltd

Erscheinungsjahr

2015

Link zum Volltext

Quelle

Wiley Online Library Journals Frontfile Complete

Beschreibungen/Notizen

• Chemical oxidative polymerization, in the presence of MgO particles, was used to synthesize, for the first time, polyaniline needles and urchin‐like structures. The polyaniline (PANI) morphological structure is strongly correlated with the preparation procedure, yielding diverse geometries such as nano‐tubes, belts, rods, fibres and particles. In this study, the synthesis of a novel PANI morphology of consisting of hollow needles and urchin‐like structures is presented and its formation mechanism is explained. The polymer was synthesized by chemical oxidative polymerization of aniline in the presence of magnesium oxide as a structural directing agent. The morphological study of the urchin‐like PANI was conducted using scanning electron microscopy and in situ monitoring of needle growth was done using optical microscopy. The structure and functional groups of these novel structures were characterized using Fourier transform infrared spectroscopy. Additionally, the formation mechanism is modelled based on the multi‐layer theory where a core–shell structure exists between the polymer (shell) and the magnesium oxide particles (core). © 2014 Society of Chemical Industry